Radium is a white metal that does not occur in a free state; it must be refined from pitchblende and occurs naturally only as a disintegration product in the radioactive decay of thorium, uranium, or actinium.
Uraninite
Radium has not its own minerals; radium exist in extremely low concentrations in uranium and thorium ores.
Radium don't contain acids !
Uranium Oxide- U3O8
Chemists, physicists, radiologists
It is a metallic mineral.
pitchblende was the first, but any good uranium ore will do as it is a daughter element of uranium's decay.
A harder mineral will scratch a softer one.
Yes. Radium is actually considered an alkaline earth metal. Its colour is nearly pure white, but when exposed to air, it turns black. Radium is also extremely radioactive. A link is provided to the Wikipedia article on radium.
Marie and Pierre Curie isolate radium. On April 20, 1902, Marie and Pierre Curie successfully isolate radioactive radium salts from the mineral pitchblende in their laboratory in Paris. In 1898, the Curies discovered the existence of the elements radium and polonium in their research of pitchblende.
No, Radon is an element. 222Rn belongs to the radium and uranium-238 decay chain, and has a half-life of 3.8235 days.
Pitchblende is a radioactive mineral composed of the mineral uraniumite. It is one of the main mineral ores of uranium.